login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A082815 Consider primes p with a unique representation p = x^2 + y^2, where x is least primitive root of p. a(n) is the first such prime with x increasing in the sequence, x can be found in A082816. 2
2, 5, 3061, 398261, 2387221, 8935021, 514613581 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

A082842 includes all numbers having primitive roots.

EXAMPLE

398261 = 10^2 + 631^2 and 10 is least primitive root of 398261.

CROSSREFS

Cf. A002313, A082816, A082842.

Sequence in context: A079014 A082973 A187604 * A115893 A057678 A090071

Adjacent sequences:  A082812 A082813 A082814 * A082816 A082817 A082818

KEYWORD

nonn

AUTHOR

Sven Simon (sven-h.simon(AT)t-online.de), May 24 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 13 10:20 EST 2012. Contains 205451 sequences.